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Vinegar residue organic matrix moisture content detection method

A technology of organic matrix and detection method, which is applied in the direction of measuring device, color/spectral characteristic measurement, and material analysis through optical means, which can solve problems such as errors and achieve the effect of increasing reliability

Inactive Publication Date: 2010-08-18
JIANGSU UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

The composition of the organic matrix of vinegar grains is very different from that of the soil. The solid part is mainly composed of more than 80% organic materials, with a porosity of more than 70% and a bulk density of less than 0.3g / cm 3 , the texture is light, so there will be large errors in the determination of its water content by TDR and FDR methods

Method used

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  • Vinegar residue organic matrix moisture content detection method
  • Vinegar residue organic matrix moisture content detection method
  • Vinegar residue organic matrix moisture content detection method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The moisture contents of the above-mentioned 12 samples to be tested obtained with different moisture contents are calculated, and the comparative effect of its calculation result (predicted value) and the drying weighing method result (measured value) is shown in the following table 2:

[0026] Table 2

[0027]

[0028]

Embodiment 2

[0030] In order to further verify the implementation effect of the present invention, collect 8 samples of vinegar residue organic matrix samples in cucumber cultivation and use, first carry out spectral scanning, then carry out the pretreatment of the first order differential after first sliding average filtering, and then the spectral data after preprocessing Input it into the established calibration model pair, calculate the water content of the sample (predicted value), and compare it with the determination result of the drying weighing method. Table 3 has shown the comparison result of the present invention to the predictive value of the organic substrate water content of vinegar grains in cultivation use and drying weighing method (measured value):

[0031] table 3

[0032]

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Abstract

The invention discloses a vinegar residue organic matrix moisture content detection method. Firstly vinegar residue organic matrix samples in different moisture contents are taken, one part is taken as a correction set, other part is taken as a predetermination set, and the rest is taken as samples to be detected, and moisture contents of all the samples are determined as measured value by drying weighing method; reflectance spectrum information of sample is acquired by a visible near-infrared spectrometer, the relationship of spectroscopic data of the correction set and moisture content measured value thereof is utilized to build a correction model; spectroscopic data of the predetermination set is input into the correction model for carrying out predetermination, predetermination result of sample moisture content of predetermination set is obtained and difference thereof with the measured value is analyzed, and a correction model predetermination precision of which meets requirement is selected; and finally spectroscopic information of sample to be detected is input into the selected correction model to calculate the moisture content of sample to be detected. The invention can rapidly and conveniently determine moisture content in matrix in field in batch and can dynamically detect variation of moisture content of matrix in crop growing process.

Description

technical field [0001] The invention relates to the technical field of agricultural environment information detection, in particular to a detection of the moisture content of the organic matrix of vinegar grains based on visible / near-infrared spectrum analysis. Background technique [0002] With the rapid development of facility agriculture, a large amount of industrial and agricultural organic waste materials have been used in the research and development of organic cultivation substrates. Due to the wide source of waste raw materials, simple manufacturing process, low cost and ideal use effect, it can promote the efficient use of resources and solve the problem of secondary pollution caused by a large amount of waste discharge. Organic substrate cultivation has become an important part of facility agricultural production. A soilless cultivation method with the most development potential. But at present, the large-scale promotion and application of organic substrates are g...

Claims

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Application Information

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IPC IPC(8): G01N21/35G01N21/31G01N21/359
Inventor 朱咏莉李萍萍吴沿友孙德民
Owner JIANGSU UNIV
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